. >> reporter: president obama hit the campaign trail early rallying supporters in del rey beach florida at a debate with mitt romney. >> during the debate he said he didn't want more troops in iraq. but he was caught on video saying it was unthinkable not to leave 20,000 troops in iraq. >> reporter: romney posed for pictures with police officers in florida this morning before heading to nevada and colorado. bows candidates are beginning an all-out blitz of key battleground states in the final two weeks of the campaign. during last night's foreign policy debate, the candidates clashed over military size and spending, russia and iran but answers drift back to the economy. >> america must be strong. america must lead. and for that to happen, we have to strengthen our economy here at home. you can't have 23 million people struggling to get a job. >> both at home and abroad he proposed wrong and reckless policies. >> reporter: when it was over a cbs news instant poll of uncommitted voters gave a clear victory to president obama, 53 to 23%. romney surprised some debate watchers when he didn't